Atomic radii of Be, O, C, N, B are respective | vedclass

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(D) Across a period from left to right, the effective nuclear charge $(Z_{eff})$ increases, which leads to a decrease in atomic radius $(A.R.)$.For th

Vedclass · Accepted Answer

$111, 66, 88, 77, 74$

Vedclass · Answer

(D) Across a period from left to right, the effective nuclear charge $(Z_{eff})$ increases, which leads to a decrease in atomic radius $(A.R.)$.For the elements $Be, B, C, N, O$ (all in period $2$), the order of atomic radii is $Be > B > C > N > O$.The corresponding values in $pm$ are $111, 88, 77, 74, 66$ respectively.Thus, the correct sequence for $Be, O, C, N, B$ is $111, 66, 88, 77, 74$.

Atomic radii of $Be, O, C, N, B$ are respectively (in $pm$):

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